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EN 2.4964 Cobalt vs. EN 1.4606 Stainless Steel

EN 2.4964 cobalt belongs to the cobalt alloys classification, while EN 1.4606 stainless steel belongs to the iron alloys. They have a modest 27% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 2.4964 cobalt and the bottom bar is EN 1.4606 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 40
23 to 39
Fatigue Strength, MPa 220
240 to 420
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 86
75
Tensile Strength: Ultimate (UTS), MPa 960
600 to 1020
Tensile Strength: Yield (Proof), MPa 390
280 to 630

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Melting Completion (Liquidus), °C 1630
1430
Melting Onset (Solidus), °C 1550
1380
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
2.2

Otherwise Unclassified Properties

Density, g/cm3 9.6
7.9
Embodied Carbon, kg CO2/kg material 9.8
6.0
Embodied Energy, MJ/kg 140
87
Embodied Water, L/kg 450
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 310
190 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 340
200 to 1010
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 21
24
Strength to Weight: Axial, points 28
21 to 36
Strength to Weight: Bending, points 23
20 to 28
Thermal Diffusivity, mm2/s 3.9
3.7
Thermal Shock Resistance, points 25
21 to 35

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0.050 to 0.15
0 to 0.080
Chromium (Cr), % 19 to 21
13 to 16
Cobalt (Co), % 46.4 to 58
0
Iron (Fe), % 0 to 3.0
49.2 to 59
Manganese (Mn), % 0 to 2.0
1.0 to 2.0
Molybdenum (Mo), % 0
1.0 to 1.5
Nickel (Ni), % 9.0 to 11
24 to 27
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
1.9 to 2.3
Tungsten (W), % 14 to 16
0
Vanadium (V), % 0
0.1 to 0.5